hphp/hack/test/full_fidelity/cases/concurrent/concurrent_nested_with_async_closure_1.php

   1 <?hh
   2
   3 async function f() {
   4   concurrent {
   5     await async {
   6       concurrent {
   7         await g();
   8         await h();
   9       }
  10     };
  11     await f();
  12   }
  13 }